We have Sentinels, I take it that Bloodthirst is an Inspiration? (sorry don't have endgame Imperial)
That's new thing to me, thought that it applies to whole operation group. Anyways, noted, thanks for pointing it out.

Tbh we aren't really aiming to actually kill them right now. We want to learn the fight, survive the phases and after that we will aim for elimination of enrage. Because we can't rightfully blame our DPS guys for the failure before we live long enough to see the enrage timer - they always managed to squeeze themselves out to kill another fearful boss, I am sure they will manage this time, too. They are the best.